This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.

Pediatric Appendicitis Score (PAS)

Eight criteria from history, examination, and blood count, 0–10 points, thresholds according to Samuel 2002

Respiratory rate (age-dependent)

normal: ≤ 34 (2–3 y), ≤ 30 (4–5 y), ≤ 26 (6–12 y), ≤ 23/min (> 12 y) 1 elevated: 35–39 / 31–35 / 27–30 / 24–27/min 2 markedly elevated: ≥ 40 / ≥ 36 / ≥ 31 / ≥ 28/min 3

Oxygen requirement

SpO₂ > 95 % on room air 1 SpO₂ 90–95 % on room air 2 SpO₂ < 90 % on room air or oxygen requirement 3

Auscultation

normal breath sounds or end-expiratory wheeze only 1 expiratory wheezing 2 inspiratory and expiratory wheezing or diminished breath sounds 3

Retractions

none or only intercostal 1 intercostal and substernal 2 intercostal, subcostal and supraclavicular 3

Dyspnea

speaks in full sentences (infant: coos, babbles) 1 speaks in phrases (infant: short cry) 2 Single words or short phrases (infant: grunting) 3

Severity

Total	Designation according to source
5–7	5–7: mild exacerbation (peak flow > 70 % of predicted)
8–11	8–11: moderate exacerbation (peak flow 50–70 %)
12–15	12–15: severe exacerbation (peak flow < 50 %)

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Sources

Improved outcomes for hospitalized asthmatic children using a clinical pathway (Ann Allergy Asthma Immunol 84:509–516) Kelly CS, Andersen CL, Pestian JP, et al., 2000. Original paper (not freely accessible; items per concordant reproductions)

Scientific basis last reviewed: September 2026.

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Note

Calculation aid for healthcare professionals. Percentiles and z-scores describe the position of a measured value in the reference population; clinical assessment remains with the treating physician.